/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 * 
 *      http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.apache.tomcat.util.modeler;

import java.io.Serializable;

import javax.management.MBeanNotificationInfo;

/**
 * <p>
 * Internal configuration information for a <code>Notification</code>
 * descriptor.
 * </p>
 * 
 * @author Craig R. McClanahan
 * @version $Id: NotificationInfo.java 939351 2010-04-29 15:41:54Z kkolinko $
 */

public class NotificationInfo extends FeatureInfo implements Serializable {
	static final long serialVersionUID = -6319885418912650856L;

	// ----------------------------------------------------- Instance Variables

	/**
	 * The <code>ModelMBeanNotificationInfo</code> object that corresponds to
	 * this <code>NotificationInfo</code> instance.
	 */
	transient MBeanNotificationInfo info = null;
	protected String notifTypes[] = new String[0];

	// ------------------------------------------------------------- Properties

	/**
	 * Override the <code>description</code> property setter.
	 * 
	 * @param description
	 *            The new description
	 */
	public void setDescription(String description) {
		super.setDescription(description);
		this.info = null;
	}

	/**
	 * Override the <code>name</code> property setter.
	 * 
	 * @param name
	 *            The new name
	 */
	public void setName(String name) {
		super.setName(name);
		this.info = null;
	}

	/**
	 * The set of notification types for this MBean.
	 */
	public String[] getNotifTypes() {
		return (this.notifTypes);
	}

	// --------------------------------------------------------- Public Methods

	/**
	 * Add a new notification type to the set managed by an MBean.
	 * 
	 * @param notifType
	 *            The new notification type
	 */
	public void addNotifType(String notifType) {

		synchronized (notifTypes) {
			String results[] = new String[notifTypes.length + 1];
			System.arraycopy(notifTypes, 0, results, 0, notifTypes.length);
			results[notifTypes.length] = notifType;
			notifTypes = results;
			this.info = null;
		}

	}

	/**
	 * Create and return a <code>ModelMBeanNotificationInfo</code> object that
	 * corresponds to the attribute described by this instance.
	 */
	public MBeanNotificationInfo createNotificationInfo() {

		// Return our cached information (if any)
		if (info != null)
			return (info);

		// Create and return a new information object
		info = new MBeanNotificationInfo(getNotifTypes(), getName(),
				getDescription());
		// Descriptor descriptor = info.getDescriptor();
		// addFields(descriptor);
		// info.setDescriptor(descriptor);
		return (info);

	}

	/**
	 * Return a string representation of this notification descriptor.
	 */
	public String toString() {

		StringBuffer sb = new StringBuffer("NotificationInfo[");
		sb.append("name=");
		sb.append(name);
		sb.append(", description=");
		sb.append(description);
		sb.append(", notifTypes=");
		sb.append(notifTypes.length);
		sb.append("]");
		return (sb.toString());

	}

}
